Blowpipe.



J. H. FLOWER.

BLOWPIPE. APPLIOATIONIILBD SEPT. s. 1909.

Patented Oct. 11, 1910.

2 SHEETS-SHEET 1.

.` @1d/vento@ @mes/M? @XN/birman I J. H. FLOWER.

BLowHPB. APPLIOTION FILED SEPT. 9, 1909.

Patented 0012.11, 1910.

3 SHEETS-SHEET 2.

` JAMES H. FLOWER, oF ASHTABULA', omo.

nLowPIPE.

Specication of Letters Patent.

Patented oct. 11, V1910.

Application filed September 9, 1903.. Serial No. 516,828.

To all whom 'it may concern:

Be it known that I, JAMES I-I. FLOWER, a citizen of the United States, residing at Ashtabula, in the county of Ashtabula, State of Ohio, have invented certain new and useful Improvements in Blowpipes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates toga blow pipe and more particularly to the class of blow pipes especially adapted for `use by dentists, jewelers or other skilled workmen. y

The primary object of the invention is the provision of a blowpipe in which the as supply may be controlled at will and which is normally cut oif so that no gas can gain access to the main tube of the blow pipe while a pilot tube constantly wfurnishes a flame which latter is regulated or controlled by valve means disposed within said pilottube and by this pilot Haine the blow pipe may be quickly broght into service.

Another object of the invention is the provision of a blow pipe of this character in which a supply of air is delivered through the medium of an air tube to the main gas tube so as to intensify and give force to the flame issuing from the blow pipe, and this air, supply tube is provided with a removable nozzle which may be readily removed for cleaning purposes and also replaced when j unt ttor use.

A further object of the invention is the provision of .a Ablow pipe that may be ,readily and easily adjusted to direct the fiame as desired, and which is simple in construction, thoroughly efficient iii operation, and inexpensive in the manufacture.

In the drawings accompanying and forming part of this specification .is illustrated the preferred form of embodiment of the invention, which t-o enable those skilled in the art to carry the invention into practice, will be set forth at length in the following description, whilethe novelty of the invention will be pointed out in the claims hereunto appended. i

In the drawings Figure 1 is a side elevation of the invention. Fig. 2 is a vertical sectional View. Fig. 3 is a rear elevation. Fig. 4 is an enlarged detail sectional view through a portion of the pilot light tube Showing the Valve arrangement therein.

Fig. 5 is a fragmentary'sectional elevation.

a base which may be of any-desirable shape i and constructed of any suitablev material having rising centrally therefrom a vertical standard or stem 9, with a circumferential groove 10, adjacent to its upper end. The extreme upper end ot' the standard orstem 9, is tapered as at 11 and loosely surrounding the said standard is a shell 12, which lis adapted to telescope thereover and the inner end of this shell is conical shaped and adapted to rest upon the upper tapering end of the standard or stem 9, while the lower end of said shell rests upon a shoulder 13 formed circumferentiall of the standard. The lower end of the s ell 12, is provided with a series of notches 14, any one of which is adapted to engage a lug 15, projecting from the shoulder 13, on said standard so that this shell when-n normal engagement with the standard will be prevented from rotation on the latter.

Secured exteriorly to the shell 12, is a depressible spring 15', having its upper free end bent inwardly to form a right angular tongue 16, the latter adapted to work through a suitable opening 1n the shell to engage the roove 10, in the standard Q, for attaching t e shell to said standard when pressure is applied to a thumb button on the spring 17, and thereby enable the shell and the standard to be raised together as the occasion may demand.

Adjustably connect-ed to the shell 12,' is a blow pipe comprising a main gas tube18, having projecting therefrom near its lower extremity a pair of spaced parallel eai's 19, containing registering openings one of which is provided with threads engaged by an adjustable thumb screw 20, the latter also passed through a circular-shaped apertured ear 21,l formed at the upper end of the shell 12, and in this manner the tube may be adjusted at any desired angle. Formed at the upper end of the main gas tube 18, is a ball terminal 22, formed with a threaded nipplle 23, angularly disposed with respect to t e gas tube andthis nipple. has detachably connected thereto a nozzle formed of two sections 24 and 25, one threadedupon 3g. v

.able nipple 40, ma

the other, to connect the same. The opposite end of the main gas tube 18 1s closed by a threaded plug 26, which latter may be re- 't the connection of a nipple as will be hereinafter Rotatablymounted wlthin and intersecting the tube 1 8 is a valve plug 27 formedwlth a hand lever 28,'wh1ch will ermit the valve to be turned so as to reguate and cut vofi the supply of gas through thegas tube. Suitably mounted upon the l and extending in parallel relation thereto for a greater portion of itsv length is an air nal 22, inw t 20 .site -end of the air tube 29 in this tube 29 the upper extremity 'of which is bent as at 30, and assed through the ball termie nipple 23 and terminates a distance beyond the same, and in this .end of the air tube is detachably threaded a jet nozzle 31, which latter mayv be readily removed to permit cleaning thereof and also permit it to be replaced by a new one should the same become unfit for use. The oppois formed with an angularly disposed nipple 'terminal 32 to which latter is` adapted 'to be connected av pipe 33, havingtcommunication with any suitable source of air supply.

At one side of the main gas tube 18, and extending longitudinally .in parallelism therewith is a pilot liame tube formed of sections 34 and 35,. the latter of which has its upper end arranged in proximity to the doub e nozzles 24 and 25 and extends slightly beyond the nozzle 25 so as to furnis a lighting flame to the burner. The mutually adjacent ends of the sections 34 and 35 are provided with screw threads, the thread on one section being of a. different size than the thread on the other section, and both of these threads en age a correspond'- -ingly threaded coupler orming a turning sleeye 36, in which 1s loosely disposed a flat disk k37, forming a valve, and this disk is adapted to be locked between the ends of the sections .34 and 35 upon turning the sleeve '37 fin one direction so as to shut off the supply of gas through the pilot tube, but upon turning the sleeve 36, in the opposite direction, the disk is freed so that gas will esca e about the same following the trendof te thread in the sleeve 36 and passing through notches 38, in the end of the section 35, to

this upper section 35 where it is spent for roducing a continuous pilot flame for the low'pipe. e Connected to the main gas tube 18 at one side thereof Ais a chambered bulb 39, into which leads the lower end of the section 34,

of the pilot tube anddetachably threaded ulb 39, is a nipple 40, which latter has connection with a suitable gas supply .pipe so that gas win be Sap tube 18- s tube 18, and the ilot tu The detache inserted or attached to'the lower end o the main gas tube 418, by removing the plug 26 and inserting the same in the bulb 39, at the point where the nozzle 40 is adapted to connect therewith, and when this latter nozzle is connected with the gas tube 18, it will supply gas directly thereto.

Working transversely through the as tube '18, is a manually o erable adjustable needle valve 41, control in a bypass 42, establishing communication tween the gas tube and air tubeso as to regulate the supply of air from said air'tube 29, to the gas tube for its mixture with the gas prior to the discharge of the latter from the burner nozzle.

It 1s obvious that due to the disposition of the lever.28 formed on the valve plu 27,

an operator may readily control the atterso as to regulate the gas supply through the flame as the occasion may demand.

In operation, the pilot tube with a minute jet flame may be continually burning to avoid the necessity of lighting the main jet any time itis desired to use .the device, the flow of dgas through the pilot tube being regulate upon manipulation of the turning sleeve 36, and the supply of gas passing through the main gas tube 18, regulated through the valve 27, and in this manner the operator has full control of the device.

From the foregoing, the construction and operation of the invention will be clearly apparent without the necessity of a more extended explanation and therefore the same has been omitted.

What is claimed is 1. In a blow pipe, agas tube, an air tube, a pilot, light tube at one side of the gas tube and having. upper and lower sections, a turning sleeve connectin the adjacent ends of t-he sections, and' a isk located within thev sleeve between the adjacent ends of the sections'and ada ted to control the gas supply throu h sai pilot tube.

2. In a low pipe, a main gas tube having a branch at substantially right angles thereto, a pilot'tubearranged in parallelism with with the said branch, the said main gas tube and branch being provided'with internally threaded open ends, and -an interchangeable' plug and nipple ada ted to be engaged in either of the internal y threaded ends of the main tube and branch.

In testimony whereof, I ailix my signature, in presence of two witnesses.

JAMES H. FLOWER. Witnesses H. P. BnAnDsLEY O. B. LAMBERT.

said main as tube' and in communication 

